Find the volume of a pyramid with a square base, where the area of the base is 13.2\text{ cm}^213.2 cm 2 and the height of the pyramid is 13.7\text{ cm}13.7 cm. Round your answer to the nearest tenth of a cubic centimeter.

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.